If you thought the ancient evergreens at California's Big Basin Redwoods State Park were old, the state's bristlecone pines ...

A swarm of destructive wasp-like insects is spreading fast, and it could mean bad news for pine trees, holiday traditions, and your backyard.

In a Swiss pine forest, the treetops are being sprayed with mist in a bid to discover the effect that drier or wetter air has ...

The tree, which is over 4,800 years old, is found in a grove of other trees, but its exact location is kept a secret.